Initialize clusters in self.clustering after pre-training

[datianz-dot]

Thank you very much for providing this version. When I run the program, can run normally, but I found that there is a problem I can not understand, in the pre-training of self clustering initialization clustering, DCN.Py file 112 lines of self.clustering.init _ cluster ( batch _ X ) output results for None, I do not understand why this is, you can explain it for me ?